The Mean Girls star wore a black leather jacket and short skirt that matched her jet black locks. She posed for pictures with store workers, and also came up with a recipe for a milkshake that will be subsequently sold (in her name) for charity. Other celebs who have made appearances at Millions of Milkshakes include Miley Cyrus, Pamela Anderson and Jon Gosselin.

This April has seen a series of turbulent times for Lindsay, including a public war of words with her father Michael, and an incident at the Coachella music festival in which she claimed ex-lover Samantha Ronson tried to spit on her. She was also reportedly banned from an Los Angeles club Trousdale last week after another run-in with Ronson, in which Lohan allegedly threw a glass at her.